1 files changed, 106 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/ExtensionValueFactory.ts b/third_party/js/PKI.js/src/ExtensionValueFactory.ts
new file mode 100644
index 0000000000..a74cb00e53
--- /dev/null
+++ b/third_party/js/PKI.js/src/ExtensionValueFactory.ts
@@ -0,0 +1,106 @@
+import * as asn1js from "asn1js";
+import * as OID from "./ObjectIdentifiers";
+import * as Schema from "./Schema";
+
+export type ExtensionParsedValue = (Schema.SchemaCompatible & {
+  parsingError?: string;
+}) | Schema.SchemaType;
+
+export interface ExtensionValueType {
+  name: string;
+  type: ExtensionValueConstructor;
+}
+
+export interface ExtensionValueConstructor {
+  new(params?: { schema: any; }): Schema.SchemaCompatible;
+}
+
+export class ExtensionValueFactory {
+
+  public static types?: Record<string, ExtensionValueType>;
+
+  private static getItems(): Record<string, ExtensionValueType> {
+    if (!this.types) {
+      this.types = {};
+
+      // Register wellknown extensions
+      ExtensionValueFactory.register(OID.id_SubjectAltName, "SubjectAltName", AltName);
+      ExtensionValueFactory.register(OID.id_IssuerAltName, "IssuerAltName", AltName);
+      ExtensionValueFactory.register(OID.id_AuthorityKeyIdentifier, "AuthorityKeyIdentifier", AuthorityKeyIdentifier);
+      ExtensionValueFactory.register(OID.id_BasicConstraints, "BasicConstraints", BasicConstraints);
+      ExtensionValueFactory.register(OID.id_MicrosoftCaVersion, "MicrosoftCaVersion", CAVersion);
+      ExtensionValueFactory.register(OID.id_CertificatePolicies, "CertificatePolicies", CertificatePolicies);
+      ExtensionValueFactory.register(OID.id_MicrosoftAppPolicies, "CertificatePoliciesMicrosoft", CertificatePolicies);
+      ExtensionValueFactory.register(OID.id_MicrosoftCertTemplateV2, "MicrosoftCertTemplateV2", CertificateTemplate);
+      ExtensionValueFactory.register(OID.id_CRLDistributionPoints, "CRLDistributionPoints", CRLDistributionPoints);
+      ExtensionValueFactory.register(OID.id_FreshestCRL, "FreshestCRL", CRLDistributionPoints);
+      ExtensionValueFactory.register(OID.id_ExtKeyUsage, "ExtKeyUsage", ExtKeyUsage);
+      ExtensionValueFactory.register(OID.id_CertificateIssuer, "CertificateIssuer", GeneralNames);
+      ExtensionValueFactory.register(OID.id_AuthorityInfoAccess, "AuthorityInfoAccess", InfoAccess);
+      ExtensionValueFactory.register(OID.id_SubjectInfoAccess, "SubjectInfoAccess", InfoAccess);
+      ExtensionValueFactory.register(OID.id_IssuingDistributionPoint, "IssuingDistributionPoint", IssuingDistributionPoint);
+      ExtensionValueFactory.register(OID.id_NameConstraints, "NameConstraints", NameConstraints);
+      ExtensionValueFactory.register(OID.id_PolicyConstraints, "PolicyConstraints", PolicyConstraints);
+      ExtensionValueFactory.register(OID.id_PolicyMappings, "PolicyMappings", PolicyMappings);
+      ExtensionValueFactory.register(OID.id_PrivateKeyUsagePeriod, "PrivateKeyUsagePeriod", PrivateKeyUsagePeriod);
+      ExtensionValueFactory.register(OID.id_QCStatements, "QCStatements", QCStatements);
+      ExtensionValueFactory.register(OID.id_SignedCertificateTimestampList, "SignedCertificateTimestampList", SignedCertificateTimestampList);
+      ExtensionValueFactory.register(OID.id_SubjectDirectoryAttributes, "SubjectDirectoryAttributes", SubjectDirectoryAttributes);
+    }
+
+    return this.types;
+  }
+
+  public static fromBER(id: string, raw: BufferSource): ExtensionParsedValue | null {
+    const asn1 = asn1js.fromBER(raw);
+    if (asn1.offset === -1) {
+      return null;
+    }
+
+    const item = this.find(id);
+    if (item) {
+      try {
+        return new item.type({ schema: asn1.result });
+      } catch (ex) {
+        const res: ExtensionParsedValue = new item.type();
+        res.parsingError = `Incorrectly formatted value of extension ${item.name} (${id})`;
+
+        return res;
+      }
+    }
+
+    return asn1.result;
+  }
+
+  public static find(id: string): ExtensionValueType | null {
+    const types = this.getItems();
+
+    return types[id] || null;
+  }
+
+  public static register(id: string, name: string, type: ExtensionValueConstructor) {
+    this.getItems()[id] = { name, type };
+  }
+
+}
+
+import { AltName } from "./AltName";
+import { AuthorityKeyIdentifier } from "./AuthorityKeyIdentifier";
+import { BasicConstraints } from "./BasicConstraints";
+import { CAVersion } from "./CAVersion";
+import { CertificatePolicies } from "./CertificatePolicies";
+import { CertificateTemplate } from "./CertificateTemplate";
+import { CRLDistributionPoints } from "./CRLDistributionPoints";
+import { ExtKeyUsage } from "./ExtKeyUsage";
+import { GeneralNames } from "./GeneralNames";
+import { InfoAccess } from "./InfoAccess";
+import { IssuingDistributionPoint } from "./IssuingDistributionPoint";
+import { NameConstraints } from "./NameConstraints";
+import { PolicyConstraints } from "./PolicyConstraints";
+import { PolicyMappings } from "./PolicyMappings";
+import { PrivateKeyUsagePeriod } from "./PrivateKeyUsagePeriod";
+import { QCStatements } from "./QCStatements";
+import { SignedCertificateTimestampList } from "./SignedCertificateTimestampList";
+import { SubjectDirectoryAttributes } from "./SubjectDirectoryAttributes";
+
+